“It’s a lot of arms,” Padres manager Bud Black said recently as he scanned the long list of pitchers on the wall of his spring training office. “We’ve got a lot of arms, a lot of games, a lot of opportunities.”

Plus the possibility that General Manager Josh Byrnes could still trade for a starting pitcher during spring training.

The lengthy audition for spots in the rotation starts next Friday as the Padres embark on a franchise record, 37-game exhibition season.

Up first will be pitchers not at the top of the list of candidates.

Among the more intriguing names on that list is 25-year-old Tyson Ross, who the Padres acquired from Oakland last Nov. 16 in a trade that sent starting pitcher Andrew Werner and utility infielder Andy Parrino to the A’s.

Ross is a native of Berkeley who went to the University of California and was the second-round pick of the A’s in the 2008 draft. Although the trade uprooted Ross, it reunited him with his younger brother Joe, who was a Padres 2011 first-round draft pick.

The trade also gave Tyson Ross, an imposing 6-foot-6, 230-pound right-hander, a chance to restart his career after three seasons of bouncing between the A’s and Oakland’s Triple-A affiliate in Sacramento.

In 2010, Ross was 2-1 with a 3.55 earned run average in six starts with Sacramento. The following year, he was 3-3 with a 2.75 ERA in nine games (six starts) with Oakland, but only 3-2 with a 7.61 ERA in nine starts with Sacramento. Last year, Ross was 6-2 with a 2.99 ERA in 15 games (13 starts) with Sacramento, but struggled to a 2-11 record and a 6.50 ERA in 18 games (13 starts) with the A’s.

“There was a lot of back-and-forth in Oakland that I’m hoping is behind me,” Tyson said Friday. “I think my numbers in Sacramento last year show what I can do.

“When I was in Oakland, I was making some mechanical tweaks and it’s hard to pitch in the major leagues when you are doing that.

“This is a great opportunity for me to put everything together,” said Ross.”